Method of breeding hatchlings by crossbreeding the female sturgeon and the male sturgeon

Abstract

The invention discloses a huso dauricus female fish and amur sturgeon male fish hybridization fish breeding method and belongs to the technical field of aquaculture. The method includes the steps that firstly, parent selection is conducted, wherein a huso dauricus at age 14+ is selected as a female parent, and an amur sturgeon at age 8+ is selected as a male parent; secondly, parent fish breeding and reproductive regulation are conducted, wherein S1, the parent fishes are selected, S2, feeds of the parent fishes are selected, the parent fishes are fed and nutrient enrichment is performed, S3, water temperature and reproductive regulation is performed, and S4, breeding condition management and daily management are performed; thirdly, artificial fertilization and incubation are conducted, S1, egg stripping and semen collection are performed, S2, artificial fertilization is performed, S3, egg washing is performed, and S4, fertilized ovum incubation is performed; fourthly, larval fish and juvenile fish breeding is conducted. The hybridized sturgeon fry bred through the method are high in fertilization rate and incubation rate, and have the advantages of being excellent in growth trait, and specifically speaking, the hybridized sturgeon fry are quick in growing, wide in adaptability, high in stress resistance and the like, and therefore the method is suitable for breeding of sturgeons in different regions of China.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for hybrid breeding of sturgeon females and male sturgeons. Background technique [0002] At present, my country has become the world's largest sturgeon breeding country, with an annual output of about 21,000 tons, accounting for 89% of the world's sturgeon farming output. With the rapid development of our country's sturgeon aquaculture industry, problems such as the confusion of hybrid breeding species and the lack of good breeding species have become increasingly prominent, which seriously restricts the healthy development of our country's sturgeon industry. At present, most of the sturgeon cultured species in my country are wild domesticated species, and the cultured species are chaotic in production. Most of them are chaotic hybrids in some small farms, and the breeding performance is low. Except that there is no good species of sturgeon in my country, other major...

AI Technical Summary

Problems solved by technology

Among them, Sturgeon schneidi is the earliest self-developed local sturgeon culture species in my country. It is welcomed by farmers because of its large size, fast growth and good meat quality. It accounts for more than 15% of my country's aquaculture output. Disadvantages of accepting artificial feed

The Huso dabryus is large in size and has obvious growth advantages under artificial breeding conditions, but its sexual maturity is about 16-20 years later than other sturgeons. These shortcomings of breeding limit their breeding and promotion to a certain extent.